Pilaster



FIG. 1 is a perspective view of the pilaster embodying the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof, the bottom plan view being identical thereto;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image; and,

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a pilaster, as shown and described. 